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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:156AV GHM

Order: 19

Horizontal side: 156 Vertical side: 156

Elements: 4, 4√2, 8, 12, 15, 16, 20, 15√2, 18√2, 20√2, 30, 40, 45, 48, 63, 78, 63√2, 93, 78√2.

Code: 935 0 63 784 78 78 783 156 78 154 93 63 153 108 63 405 108 38 481 156 78 637 0 63 630 63 63 451 108 63 205 108 18 204 128 18 46 144 34 85 148 30 163 144 18 45 144 30 127 144 30 303 156 0 184 126 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

93
78√2
78
15√2
15
40
48
63
63√2
45
20
20√2
4√2
8
16
4
12
30
18√2